20/3 STRANDED BC SHIELDED CMR/CL3R
20/3 STRANDED BC SHIELDED CMR/CL3R
Applications:
The fire alarm cable is an electrical wire that is used in security, intercom, audio and sound systems and power-limited circuits. The maximum operating power for this electrical cable is 300V.
Also Known As:
20 3 fire alarm wire, 20 3 stranded fire alarm cable, smoke detector wiring, smoke alarm wiring, wiring fire alarm system.
Standards:
- UL Type CMR/CL3R / cUL Type CMG/FT4
- NEC Article 725 & 800
- California State Fire Marshall
Construction
Conductors:
This fire alarm cable conductor is made of bare copper. Copper is used for this application because of its amazing electrical properties and flexibility.
Insulation:
The fire alarm wire has polypropylene insulation. It can withstand a wide range of temperatures, is resistant to chemicals and water and is easy to cut.
Jacket:
The smoke alarm wiring has a PVC jacket with a rip cord. It is resistant to extreme temperatures, chemicals and UV light deformations. It is also water-tight and easy to cut.
Shield:
This cable has a mylar-backed aluminum tape shield with 100% coverage.
Specifications:
- Conductor size (AWG): 20
- No. of Conductors: 3
- Stranding: 7/28
- Nominal O.D. (inches): 0.144
- Weight (lbs/1,000ft): 20.3
